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About Form 1120, U.S. Corporation Income Tax Return
Domestic corporations use this form to: Report their income, gains, losses, deductions, credits. Figure their income tax liability.
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26 U.S. Code 6062 - Signing of corporation returns
The return of a corporation with respect to income shall be signed by the president, vice-president, treasurer, assistant treasurer, chief accounting officer.
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Form 4466 (Rev. October 2018)
File Form 4466 after the end of the corporations tax year, and no later than the due date for filing the corporations tax return (not including extensions).
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